UMC vs STM vs MU Stock Comparison

United Microelectronics, STMicroelectronics and Micron Technology Prices as of Oct 28, 2026 Peers: Industry group
UMC United Microelectronics Corp
$18.84 -21.0% 1M +146.9% 1Y
Market cap
$47.43B
P/E
17.4x
Revenue (TTM)
$14.11B
Div. yield
2.12%
Semiconductor Manufacturing Technology
2 wins
STM STMicroelectronics N.V.
$48.54 -8.0% 1M +92.5% 1Y
Market cap
$43.14B
P/E
93.0x
Revenue (TTM)
$13.10B
Div. yield
0.74%
Semiconductor Manufacturing Technology
1 win
MU Micron Technology Inc
$983.23 -6.7% 1M +343.1% 1Y
Market cap
$1.11T
P/E
13.0x
Revenue (TTM)
$133.19B
Div. yield
0.06%
Semiconductor Manufacturing Technology
9 wins

Head to Head

12 decided of 12

Micron Technology leads on 9 of the 12 questions below (Micron Technology 9, United Microelectronics 2, STMicroelectronics 1). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionUMCSTMMULeader
Larger companyMarket capitalisation $47.43B $43.14B $1.11T MU
Cheaper on earningsLower P/E, profitable companies only 17.4x 93.0x 13.0x MU
Cheaper on forward earningsLower price / next fiscal year consensus EPS 17.1x 37.6x 5.3x MU
Faster revenue growthRevenue growth, trailing twelve months +87.7% +10.5% +256.3% MU
More profitableNet margin, trailing twelve months 18.7% 3.6% 63.8% MU
Better return on capitalReturn on invested capital 11.6% 3.9% 67.7% MU
Less leveragedLower net debt / EBITDA -1.0x — -0.4x UMC
Higher dividend yieldTrailing dividend yield 2.12% 0.74% 0.06% UMC
Better 1-year returnPrice return, last 12 months +146.9% +92.5% +343.1% MU
Better 5-year returnAnnualised price return, 5 years +12.9%/yr +0.4%/yr +70.1%/yr MU
Less volatileAnnualised volatility, 1 year 64.5% 60.2% 80.8% STM
Higher overall scoreMean of the five percentile scores vs peers 80/100 40/100 88/100 MU

Percentile Scorecard

UMCSTMMU

Each axis is the mean percentile of its metrics against the company's industry group. 100 is the best in the group, 50 the middle.

Scores by Axis

AxisUMCSTMMU
Valuation 93 #8 of 94 79 #21 of 94 86 #14 of 94
Growth 79 #20 of 92 11 #82 of 92 100 #1 of 92
Profitability 73 #25 of 90 38 #56 of 90 100 #1 of 90
Financial Health 66 #34 of 99 40 #60 of 99 74 #27 of 99
Shareholder Returns 89 #9 of 73 32 #50 of 73 81 #15 of 73
Overall 80 40 88
  • UMC ranked among 103 companies in Semiconductors
  • STM ranked among 103 companies in Semiconductors
  • MU ranked among 103 companies in Semiconductors

Price Performance

Price return, split-adjusted, before dividends. Click a name to hide or show it.

Returns

PeriodUMCSTMMUSPY
1 month -21.0%-8.0%-6.7% +0.9%
3 months +10.1%+0.3%+33.0% +5.9%
6 months +47.8%-7.8%+89.6% +8.5%
Year to date +139.7%+87.1%+244.5% +13.3%
1 year +146.9%+92.5%+343.1% +12.4%
3 years +166.5%+22.6%+1,397.7% +88.1%
3 years, per year +38.7%+7.0%+146.6% +23.5%
5 years +83.4%+1.9%+1,322.9% +68.2%
5 years, per year +12.9%+0.4%+70.1% +11.0%
10 years +907.5%+427.0%+5,616.5% +263.4%
10 years, per year +26.0%+18.1%+49.9% +13.8%

Risk

MeasureUMCSTMMUSPY
Volatility, 1Y 64.5%60.2%80.8% 12.7%
Downside volatility, 1Y 56.8%61.2%74.6% 12.7%
Beta vs S&P 500, 1Y 1.782.873.36 1.00
Return / volatility, 1Y 2.281.544.24 0.98
Max drawdown, 5Y -57.3%-67.2%-57.8% -25.4%
From 52-week high -32.7%-39.3%-19.0% -0.9%
52-week high $28.01$79.91$1,213.56 $779.14
52-week low $7.02$21.20$201.37 $631.97

Valuation History

Weekly multiples on trailing twelve-month fundamentals. Negative or extreme readings (a loss year, a collapsed denominator) are left out so the chart stays readable.

MultipleUMCSTMMU
P/E now vs peer median 17.4xmedian 46.0x 93.0xmedian 46.0x 13.0xmedian 46.0x
P/S now vs peer median 3.4xmedian 7.9x 3.3xmedian 7.9x 8.3xmedian 7.9x
EV/EBITDA now vs peer median 11.6xmedian 28.3x —median 28.3x 9.9xmedian 28.3x
P/FCF now vs peer median 21.7xmedian 41.4x —median 41.4x 18.9xmedian 41.4x
P/B now vs peer median 3.2xmedian 4.6x 2.3xmedian 4.6x 8.0xmedian 4.6x
PEG now vs peer median 2.74median 2.30 -1.78median 2.30 0.09median 2.30

Financial History

Reported figures by fiscal period, placed on the calendar year (or quarter) each period ended in, so companies with different fiscal years line up.

Trailing twelve monthsUMCSTMMU
Revenue $14.11B $13.10B $133.19B
Gross profit $2.67B $4.49B $107.50B
Operating income $1.81B $804.00M $99.34B
Net income $2.64B -$33.00M $84.97B
Free cash flow $2.19B – $58.96B
R&D $595.72M $2.11B $5.65B
EPS (diluted) $1.07 $0.50 $74.34
Cash & equivalents $4.48B $3.10B $38.36B
Total debt $781.92M $1.91B $5.18B
Shares (diluted) 2.47B 923.05M 1.14B
Enterprise value $31.80B $29.41B $1.02T

All Metrics

58 metrics · best in bold

Bold marks the best reading: the lowest positive value for multiples, leverage and payout, the highest for everything else. The bar under each value is its percentile against that company's own peers. Hover a value for its rank and the peer median.

Valuation

12 metrics
MetricUMCSTMMU
P/E 17.4x 93.0x 13.0x
P/FCF 21.7x – 18.9x
P/Operating cash flow 12.6x – 12.4x
P/S 3.4x 3.3x 8.3x
P/B 3.2x 2.3x 8.0x
P/Tangible book 3.2x 2.6x 8.0x
EV/EBITDA 11.6x – 9.9x
EV/EBIT 24.2x 50.7x 10.8x
EV/Revenue 3.1x 3.1x 8.1x
EV/FCF 20.0x – 18.2x
EV/Operating cash flow 11.6x – 12.0x
PEG (3Y EPS CAGR) 2.74 -1.78 0.09

Growth

14 metrics
MetricUMCSTMMU
Revenue growth (1Y) 87.7% 10.5% 256.3%
Revenue CAGR (3Y) 22.9% 0.2% 104.6%
Gross profit growth (1Y) 22.7% 5.7% 622.8%
Gross profit CAGR (3Y) -2.4% -18.8% 327.1%
Operating income growth (1Y) 29.9% 28.0% 916.8%
Operating income CAGR (3Y) -6.7% -45.3% 168.2%
Net income growth (1Y) 97.8% -106.8% 895.1%
Net income CAGR (3Y) 5.5% -26.2% 154.9%
EPS growth (1Y) 97.8% -27.2% 879.4%
EPS CAGR (3Y) 6.4% -52.3% 151.6%
Operating cash flow growth (1Y) 19.0% – 411.7%
Operating cash flow CAGR (3Y) 5.1% – 286.0%
Free cash flow growth (1Y) 410.9% – 3,435%
Free cash flow CAGR (3Y) 11.3% – 126.6%

Profitability

14 metrics
MetricUMCSTMMU
Gross margin 18.9% 34.3% 80.7%
EBITDA margin 26.7% – 81.7%
Operating margin 12.8% 6.1% 74.6%
Pretax margin 30.5% 5.7% 74.8%
Net margin 18.7% 3.6% 63.8%
FCF margin 15.5% – 44.3%
Operating cash flow margin 26.7% – 67.3%
Return on equity 18.4% 2.6% 71.0%
Return on assets 12.5% 1.8% 51.5%
Return on invested capital 11.6% 3.9% 67.7%
Return on capital employed 9.6% 3.7% 72.2%
Asset turnover 0.7x 0.5x 0.8x
Cash conversion (OCF / net income) 1.4x – 1.1x
Stock comp / revenue 0.1% 1.4% 1.0%

Financial Health

11 metrics
MetricUMCSTMMU
Debt / assets 3.7% 6.7% 2.6%
Debt / equity 0.1x 0.1x 0.0x
Net debt / EBITDA -1.0x – -0.4x
Debt / FCF 0.4x – 0.1x
Liabilities / assets 30.3% 33.6% 29.4%
Equity / assets 69.7% 66.4% 70.6%
Interest coverage 33.0x – 937.2x
Current ratio 3.3x 2.5x 3.3x
Quick ratio 2.6x 1.5x 2.9x
Cash ratio 2.0x 0.8x 1.6x
Altman Z-score – 4.25 15.29

Shareholder Returns

7 metrics
MetricUMCSTMMU
Dividend yield 2.1% 0.7% 0.1%
Net buyback yield 0.6% -0.7% 0.1%
Shareholder yield 2.7% 0.0% 0.1%
Payout ratio (earnings) – – 0.7%
Payout ratio (FCF) – – 1.0%
Dividend growth (1Y) – – 16.9%
Dividend CAGR (3Y) – – 6.6%

Analyst Estimates

Solid lines are reported fiscal-year results; dashed lines are the consensus for the years ahead. Hover a year for the analysts' high and low, and how each result compared with its estimate.

ConsensusUMCSTMMU
Forward P/E 17.1xFY2026 37.6xFY2026 5.3xFY2027
EPS, next fiscal year $1.10FY2026 $1.29FY2026 $184.21FY2027
EPS growth, next FY +107.5%FY2026 +143.4%FY2026 +143.9%FY2027
EPS growth, the year after -2.7% +103.1% +17.3%
Revenue, next fiscal year $8.52BFY2026 $13.79BFY2026 $294.86BFY2027
Revenue growth, next FY +12.1%FY2026 +16.9%FY2026 +121.4%FY2027
Revenue growth, the year after +24.7% +18.2% +15.2%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersUMCSTMMU
Held by institutions 7.1% 19.0% 77.9%
Institutions holding 362 603 3,901
Change in shares held, QoQ +3.2% +57.4% +4.2%
Institutions buying 220 429 2,304
Institutions selling 109 108 1,432
Buyers to sellers 2.02 3.97 1.61

Return Correlation

Daily returns, last 12 months

1.00 means two stocks move in lockstep, 0 that they move independently. Pairs below about 0.5 diversify each other.

UMCSTMMU
UMC 1.00 0.42 0.46
STM 0.42 1.00 0.57
MU 0.46 0.57 1.00

Add a Peer

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Frequently Asked Questions

Which is bigger, UMC, STM and MU?

Micron Technology (MU) is the largest by market capitalisation: United Microelectronics (UMC) $47.43B, STMicroelectronics (STM) $43.14B, Micron Technology (MU) $1.11T.

Which stock is cheaper, UMC, STM and MU?

Micron Technology (MU) trades on the lowest price-to-earnings ratio (United Microelectronics (UMC) 17.4x, STMicroelectronics (STM) 93.0x, Micron Technology (MU) 13.0x). On next year's consensus earnings, Micron Technology (MU) is cheapest (United Microelectronics (UMC) 17.1x, STMicroelectronics (STM) 37.6x, Micron Technology (MU) 5.3x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

Micron Technology (MU) grew revenue fastest over the trailing twelve months: United Microelectronics (UMC) +87.7%, STMicroelectronics (STM) +10.5%, Micron Technology (MU) +256.3%.

Which company is more profitable?

Micron Technology (MU) has the highest net margin (United Microelectronics (UMC) 18.7%, STMicroelectronics (STM) 3.6%, Micron Technology (MU) 63.8%). On return on invested capital, Micron Technology (MU) leads (United Microelectronics (UMC) 11.6%, STMicroelectronics (STM) 3.9%, Micron Technology (MU) 67.7%).

Which stock has performed better?

Over the past year Micron Technology (MU) returned the most: United Microelectronics (UMC) +146.9%, STMicroelectronics (STM) +92.5%, Micron Technology (MU) +343.1%. Over five years, Micron Technology (MU) compounded fastest (United Microelectronics (UMC) +12.9%/yr, STMicroelectronics (STM) +0.4%/yr, Micron Technology (MU) +70.1%/yr). Returns are price only, before dividends.

Which pays a higher dividend?

United Microelectronics (UMC) has the highest dividend yield: United Microelectronics (UMC) 2.12%, STMicroelectronics (STM) 0.74%, Micron Technology (MU) 0.06%.

Which stock is riskier?

By one-year price volatility, STMicroelectronics (STM) has been the steadiest (United Microelectronics (UMC) 64.5%, STMicroelectronics (STM) 60.2%, Micron Technology (MU) 80.8%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, UMC, STM and MU?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, Micron Technology (MU) leads on 9. Business Quant does not give investment advice; use the comparison as a starting point for your own research.

Data from SEC filings, exchange prices and consensus estimates, via Business Quant. Percentile scores compare each company with its own peer group, so two companies' scores are each relative to different peers unless you rank against the whole market. Price returns exclude dividends. Nothing on this page is investment advice.